M0507-3-SS-20,4.5MM RD X 8MM X 3.2MM ID
【RAF Electronic Hardware】M0508-25-AL,电路板硬件 - PCB 9mm, 2.7 ID, M2.5 ROUND METRIC SPACER
M0508-25-AL-22,METRIC ROUND SPACERCLEAR ANODIZE
M0508-25-B,METRIC ROUND SPACERPLAIN BRASS4.
M0508-25-B-12,METRIC ROUND SPACERCLEAR ZINC4.5
M0508-25-B-5,METRIC ROUND SPACERNICKEL 4.5MM
【RAF Electronic Hardware】M0508-25-N,电路板硬件 - PCB 9mm, 2.7 ID, M2.5 ROUND METRIC SPACER
M0508-25-S,METRIC ROUND SPACERPLAIN STEEL4.